I obtain:
{"responseHeader":{"status":0,"QTime":88,"params":{"f.date.facet.range.gap":"+1YEAR","f.date.facet.range.start":"1900-01-01T00:00:00Z","facet":"true","shards":"localhost:8983/solr/testshard1,localhost:8983/solr/testshard2","facet.mincount":"1","q":"id:1","shards.info":"true","facet.range":"date","wt":"json","f.date.facet.range.end":"NOW"}},"shards.info":{"localhost:8983/solr/testshard2":